I personally think , that no matter what the scenario is , parents always come first . If you have to give up an ounce of ur flesh , its juss a small ask . Its not easy being a father , but a lot easy being a son/daughter . They have the experience , and they will always support you no matter what .
As they say ,a guy went ahead and killed him parents and took their heart out . While he was cherishing that moment he struck his leg on an obstacle and fell . The words that came out from his parents heart were  , "Son are u ok, hope you didn't get hurt  "? ( might missed a lill story , been long since i heard it )
As for changing trends , and lot depends on education and how the person was brought up . A good upbringing will always teach to respect , love your parents . If its the other way around ( dont have to say it , do i )?
A son/daughter will always be kids in their parents opinion. You can never be a good parent if you were not a good sibling . ( it is very true ).